Depends on the magnification you are looking for... usually, a light microscope is enough (1000x max magnification)...
An electron microscope is powered by high energy beams and can magnify many times higher than the light microscope (where magnification is limited by the wavelength of light). The magnification of an EM is on the nano scale.
(P.S.: as a chemist, I'd always choose an EM over an optical microscope as I can always zoom in or out depending on my needs) ;)
The volume of the cube increases by eight.
These stem cells come from embryos that are three to five days old. At this stage, an embryo is called a blastocyst and has about 150 cells. These are pluripotent (ploo-RIP-uh-tunt) stem cells, meaning they can divide into more stem cells or can become any type of cell in the body.
Bacteria and Humans are similar in that they both have the ability to reproduce or multiply, grow, and respond to stimulus. Both humans and bacteria need a certain place or host (in bacteria) in order to procreate. Both also need 'food' in order to grow. Humans take in fresh food, while food of bacteria differs depending on what kind of bacteria it is. For example, necrotizing fasciitis, also known as the flesh-eating bacteria. Both need sources in order to survive. And both possess the smallest functional units called cells.
